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<head><meta charset="utf-8"><title>triage meeting 2020-02-13 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html">triage meeting 2020-02-13 #54818</a></h3>

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<a name="188096072"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188096072" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188096072">(Feb 13 2020 at 11:05)</a>:</h4>
<p>Hey <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> -- <span class="user-mention" data-user-id="116083">@pnkfelix</span> told me he is not able to be here today. If anyone else wants to run the triage meeting (<span class="user-mention" data-user-id="123586">@nagisa</span>?) that would be great, otherwise I can be around at the usual time (in ~4 hours) but I won't be able to do any pre-triage.</p>



<a name="188096114"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188096114" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188096114">(Feb 13 2020 at 11:06)</a>:</h4>
<p>/me afk for now</p>



<a name="188108675"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188108675" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188108675">(Feb 13 2020 at 14:05)</a>:</h4>
<p>I will likely miss most of the meeting today as well.</p>



<a name="188112762"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188112762" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188112762">(Feb 13 2020 at 14:51)</a>:</h4>
<p>PSA: I'm out sick and won't be online or review PRs for at least the rest of the week.</p>



<a name="188113288"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188113288" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188113288">(Feb 13 2020 at 14:56)</a>:</h4>
<p>Oh dear! Poor compiler team</p>



<a name="188113601"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188113601" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188113601">(Feb 13 2020 at 15:00)</a>:</h4>
<p>Hey <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span>! Triage meeting starting <strong>now</strong>. We've got a bunch of people out today so we're just going to do the best we can. =) I'll probably cut right to any nominations and other urgent things. According to <a href="https://rust-lang.github.io/compiler-team/about/triage-meeting/" target="_blank" title="https://rust-lang.github.io/compiler-team/about/triage-meeting/">the calendar</a>, this week we have a check-in from <a class="stream" data-stream-id="144729" href="/#narrow/stream/144729-wg-traits">#wg-traits</a> (cc me, <span class="user-mention" data-user-id="232957">@Jack Huey</span>) and <a class="stream" data-stream-id="216091" href="/#narrow/stream/216091-t-compiler.2Fwg-polymorphization">#t-compiler/wg-polymorphization</a> (cc <span class="user-mention" data-user-id="116107">@davidtwco</span>).</p>
<p>But first...</p>
<h1>Announcements</h1>



<a name="188113642"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188113642" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188113642">(Feb 13 2020 at 15:00)</a>:</h4>
<ul>
<li>Tomorrow is Valentine's day <span aria-label="chocolate" class="emoji emoji-1f36b" role="img" title="chocolate">:chocolate:</span> <span aria-label="heart kiss" class="emoji emoji-1f618" role="img" title="heart kiss">:heart_kiss:</span> <span aria-label="bow and arrow" class="emoji emoji-1f3f9" role="img" title="bow and arrow">:bow_and_arrow:</span></li>
</ul>



<a name="188113669"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188113669" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188113669">(Feb 13 2020 at 15:01)</a>:</h4>
<ul>
<li>Tomorrow is a <strong>planning meeting</strong></li>
</ul>



<a name="188113928"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188113928" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188113928">(Feb 13 2020 at 15:03)</a>:</h4>
<ul>
<li>Reminder that there are <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee">31 unassigned P-high issues</a></li>
</ul>



<a name="188114012"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114012" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114012">(Feb 13 2020 at 15:04)</a>:</h4>
<p>OK, let's get started I guess. We'll kick off with </p>
<h1><a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler">Beta nominations</a></h1>



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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114043" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114043">(Feb 13 2020 at 15:04)</a>:</h4>
<ul>
<li>Correct ICE caused by macros generating invalid spans <a href="https://github.com/rust-lang/rust/issues/68611" target="_blank" title="https://github.com/rust-lang/rust/issues/68611">#68611</a></li>
</ul>



<a name="188114117"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114117" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114117">(Feb 13 2020 at 15:05)</a>:</h4>
<p>From last week:</p>
<blockquote>
<p>(we discussed backporting this in today's T-compiler meeting. We are not certain what warn! will do here, in terms of what an end-user will see, so we held off on approving this change until after we've double-checked the default UX there...)</p>
</blockquote>



<a name="188114170"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114170" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114170">(Feb 13 2020 at 15:05)</a>:</h4>
<p>Yeah I was bit dubious about the <code>warn!</code> call here though it seems like this PR is basically harmless</p>



<a name="188114291"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114291" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114291">(Feb 13 2020 at 15:06)</a>:</h4>
<p>But I guess I don't care enough to make a big thing out of it. I'm content to backport, that seems to be the consensus opinion from the emojis above :)</p>



<a name="188114321"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114321" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114321">(Feb 13 2020 at 15:06)</a>:</h4>
<ul>
<li><a href="https://github.com/rust-lang/rust/issues/68611" target="_blank" title="https://github.com/rust-lang/rust/issues/68611">#68611</a> is also <strong>stable-nominated</strong>, should we also approve for stable backport?</li>
</ul>



<a name="188114413"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114413" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114413">(Feb 13 2020 at 15:07)</a>:</h4>
<p>OK.</p>



<a name="188114557"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114557" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114557">(Feb 13 2020 at 15:08)</a>:</h4>
<h1><a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=+label%3Astable-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=+label%3Astable-nominated+label%3AT-compiler">Stable nominated</a></h1>



<a name="188114571"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114571" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114571">(Feb 13 2020 at 15:09)</a>:</h4>
<p>There are none that are not already approved.</p>



<a name="188114578"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114578" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114578">(Feb 13 2020 at 15:09)</a>:</h4>
<p>I added a new beta-nominated PR</p>



<a name="188114632"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114632" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114632">(Feb 13 2020 at 15:09)</a>:</h4>
<ul>
<li>Fix extra subslice lowering <a href="https://github.com/rust-lang/rust/issues/69128" target="_blank" title="https://github.com/rust-lang/rust/issues/69128">#69128</a> (for <strong>beta</strong> backport)</li>
</ul>



<a name="188114857"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114857" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114857">(Feb 13 2020 at 15:12)</a>:</h4>
<p>seems ok to me</p>



<a name="188114913"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114913" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114913">(Feb 13 2020 at 15:12)</a>:</h4>
<p>though I can't register a vote easily because of how emojis work:)</p>



<a name="188114933"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114933" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114933">(Feb 13 2020 at 15:12)</a>:</h4>
<p>Did slice patterns get stabilized?</p>



<a name="188114939"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114939" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114939">(Feb 13 2020 at 15:12)</a>:</h4>
<p>They did yes</p>



<a name="188114945"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114945" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114945">(Feb 13 2020 at 15:12)</a>:</h4>
<p>Ah</p>



<a name="188114948"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114948" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114948">(Feb 13 2020 at 15:12)</a>:</h4>
<p>(In beta)</p>



<a name="188114959"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188114959" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188114959">(Feb 13 2020 at 15:12)</a>:</h4>
<p>Thanks</p>



<a name="188115001"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115001" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115001">(Feb 13 2020 at 15:13)</a>:</h4>
<p>Not a lot of votes above :) I'm inclined to approve.</p>



<a name="188115023"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115023" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115023">(Feb 13 2020 at 15:13)</a>:</h4>
<p>If there are any concerns though please do raise them</p>



<a name="188115026"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115026" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115026">(Feb 13 2020 at 15:13)</a>:</h4>
<p>/me does not vote on their own PRs... it feels wrong :D</p>



<a name="188115125"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115125" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115125">(Feb 13 2020 at 15:14)</a>:</h4>
<p>OK, approved, moving on.</p>



<a name="188115194"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115194" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115194">(Feb 13 2020 at 15:15)</a>:</h4>
<h1><a href="https://github.com/rust-lang/rust/pulls?q=is%3Aopen+is%3Apr+label%3AS-waiting-on-team+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/pulls?q=is%3Aopen+is%3Apr+label%3AS-waiting-on-team+label%3AT-compiler">S-waiting-on-team</a></h1>



<a name="188115218"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115218" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115218">(Feb 13 2020 at 15:15)</a>:</h4>
<ul>
<li>rustc_session: allow overriding lint level of individual lints from a group <a href="https://github.com/rust-lang/rust/issues/67885" target="_blank" title="https://github.com/rust-lang/rust/issues/67885">#67885</a></li>
</ul>



<a name="188115236"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115236" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115236">(Feb 13 2020 at 15:15)</a>:</h4>
<p>Just entered FCP, nothing more to say here probably</p>



<a name="188115255"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115255" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115255">(Feb 13 2020 at 15:15)</a>:</h4>
<ul>
<li>Print nicer async/await trait errors for generators in any place in the error 'stack' <a href="https://github.com/rust-lang/rust/issues/67116" target="_blank" title="https://github.com/rust-lang/rust/issues/67116">#67116</a></li>
</ul>



<a name="188115276"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115276" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115276">(Feb 13 2020 at 15:15)</a>:</h4>
<p><a href="https://internals.rust-lang.org/t/poll-how-much-context-to-give-for-async-error-messages/11753" target="_blank" title="https://internals.rust-lang.org/t/poll-how-much-context-to-give-for-async-error-messages/11753">Created an internals thread</a> in response to our last discussion</p>



<a name="188115348"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115348" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115348">(Feb 13 2020 at 15:16)</a>:</h4>
<p>The poll there had 71% in favor of minimal details</p>



<a name="188115388"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115388" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115388">(Feb 13 2020 at 15:16)</a>:</h4>
<p>I personally agree with the majority; "overloading" is a real concern</p>



<a name="188115411"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115411" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115411">(Feb 13 2020 at 15:16)</a>:</h4>
<p><a href="/user_uploads/4715/0tA_-kxynpmVgMjodAsOk1MQ/pasted_image.png" target="_blank" title="pasted_image.png">pasted image</a></p>
<div class="message_inline_image"><a href="/user_uploads/4715/0tA_-kxynpmVgMjodAsOk1MQ/pasted_image.png" target="_blank" title="pasted image"><img src="/user_uploads/4715/0tA_-kxynpmVgMjodAsOk1MQ/pasted_image.png"></a></div>



<a name="188115452"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115452" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115452">(Feb 13 2020 at 15:17)</a>:</h4>
<p>I am tempted to say:</p>
<ul>
<li>We should consider (for the future) things like "verbose" or innovative UI options in IDEs</li>
<li>But for this immediate PR we should prefer minimal stack trace</li>
</ul>



<a name="188115703"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115703" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115703">(Feb 13 2020 at 15:19)</a>:</h4>
<p>Btw; I'd like to highlight a new soundness hole:</p>
<blockquote>
<p>Static lifetimes checking regression in rustc 1.41.0 <a href="https://github.com/rust-lang/rust/issues/69114" target="_blank" title="https://github.com/rust-lang/rust/issues/69114">#69114</a></p>
</blockquote>



<a name="188115705"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115705" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115705">(Feb 13 2020 at 15:19)</a>:</h4>
<p>OK, <a href="https://github.com/rust-lang/rust/pull/67116#issuecomment-585810320" target="_blank" title="https://github.com/rust-lang/rust/pull/67116#issuecomment-585810320">left a comment</a>, feel free to add your own thoughts.</p>



<a name="188115792"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115792" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115792">(Feb 13 2020 at 15:20)</a>:</h4>
<p>It would be good to fix that one sooner rather than later and consider stable backporting.</p>



<a name="188115825"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115825" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115825">(Feb 13 2020 at 15:20)</a>:</h4>
<p>I wonder if <span class="user-mention" data-user-id="116118">@Matthew Jasper</span> has time for deeper investigation</p>



<a name="188115899"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115899" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115899">(Feb 13 2020 at 15:21)</a>:</h4>
<p>left a comment</p>



<a name="188115933"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115933" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115933">(Feb 13 2020 at 15:21)</a>:</h4>
<ul>
<li>PowerPC C ZST ABI fixes <a href="https://github.com/rust-lang/rust/issues/64259" target="_blank" title="https://github.com/rust-lang/rust/issues/64259">#64259</a> is S-waiting-on-our-team</li>
</ul>



<a name="188115991"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115991" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115991">(Feb 13 2020 at 15:22)</a>:</h4>
<p>I'm not sure if it's really waiting on our team though :)</p>



<a name="188115996"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188115996" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188115996">(Feb 13 2020 at 15:22)</a>:</h4>
<p>wait</p>



<a name="188116010"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116010" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116010">(Feb 13 2020 at 15:22)</a>:</h4>
<p>did I forget about it again</p>



<a name="188116016"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116016" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116016">(Feb 13 2020 at 15:22)</a>:</h4>
<p>for another month</p>



<a name="188116033"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116033" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116033">(Feb 13 2020 at 15:22)</a>:</h4>
<p>I don't know what current status is</p>



<a name="188116055"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116055" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116055">(Feb 13 2020 at 15:22)</a>:</h4>
<p><span aria-label="speechless" class="emoji emoji-1f636" role="img" title="speechless">:speechless:</span></p>



<a name="188116067"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116067" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116067">(Feb 13 2020 at 15:22)</a>:</h4>
<p>most recent comments suggest</p>
<ul>
<li><span class="user-mention" data-user-id="116083">@pnkfelix</span> was going to investigate (but prob didn't have time)</li>
<li>glaubitz says "Is there actually stuff left to merge? The ABI fixes that were shipped with 1.40 actually reduced the number of testsuite failures for us on Debian powerpc dramatically."</li>
</ul>



<a name="188116120"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116120" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116120">(Feb 13 2020 at 15:23)</a>:</h4>
<p>yeah this ZST stuff is much rarer than the other things fixed</p>



<a name="188116247"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116247" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116247">(Feb 13 2020 at 15:24)</a>:</h4>
<p>I think maybe you were going to prepare some minimal PR, <span class="user-mention" data-user-id="119009">@eddyb</span>, with the apprach you preferred? I remember discussing that a bit, at least.</p>



<a name="188116278"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116278" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116278">(Feb 13 2020 at 15:25)</a>:</h4>
<p>yeah then I forgot about it, <em>clearly</em></p>



<a name="188116301"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116301" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116301">(Feb 13 2020 at 15:25)</a>:</h4>
<p>I can leave a comment pinging the author saying "we'd prefer to do this minimal thing"</p>



<a name="188116314"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116314" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116314">(Feb 13 2020 at 15:25)</a>:</h4>
<p>(i.e., from the team)</p>



<a name="188116323"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116323" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116323">(Feb 13 2020 at 15:25)</a>:</h4>
<p>I think you outlined what you had in mind on a comment somewhere, right?</p>



<a name="188116341"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116341" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116341">(Feb 13 2020 at 15:25)</a>:</h4>
<p>I feel comfortable anyway taking minimal steps first and not risking over-generalizing</p>



<a name="188116423"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116423" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116423">(Feb 13 2020 at 15:26)</a>:</h4>
<p>Or you can just do that :)</p>



<a name="188116442"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116442" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116442">(Feb 13 2020 at 15:26)</a>:</h4>
<p>I see <a href="https://github.com/rust-lang/rust/pull/64259#discussion_r329126394" target="_blank" title="https://github.com/rust-lang/rust/pull/64259#discussion_r329126394">this comment</a> from you:</p>
<blockquote>
<p>Wait, you've removed the target_env == "gnu" - this workaround only makes sense in that case, because ZSTs in C are a GNU extension.</p>
</blockquote>



<a name="188116444"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116444" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116444">(Feb 13 2020 at 15:26)</a>:</h4>
<p>I think it's split over several comments but what I had in mind is like a one line diff, we should've just done it months ago Q_Q</p>



<a name="188116457"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116457" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116457">(Feb 13 2020 at 15:26)</a>:</h4>
<p>sigh :)</p>



<a name="188116474"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116474" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116474">(Feb 13 2020 at 15:26)</a>:</h4>
<p>I remember you giving some small diff, yeah</p>



<a name="188116577"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116577" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116577">(Feb 13 2020 at 15:27)</a>:</h4>
<p>OK I'm going to leave a comment saying "eddyb has a one line diff" :P</p>



<a name="188116789"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116789" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116789">(Feb 13 2020 at 15:29)</a>:</h4>
<p>no, you need to actually pester me to put up a PR &gt;_&lt;</p>



<a name="188116818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116818">(Feb 13 2020 at 15:29)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/pull/64259#issuecomment-585815831" target="_blank" title="https://github.com/rust-lang/rust/pull/64259#issuecomment-585815831">done</a></p>



<a name="188116840"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116840" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116840">(Feb 13 2020 at 15:29)</a>:</h4>
<blockquote>
<p>no, you need to actually pester me to put up a PR &gt;_&lt;</p>
</blockquote>
<p>/me adds a "to do" item: "pester eddyb to put up a PR"</p>



<a name="188116852"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116852" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116852">(Feb 13 2020 at 15:30)</a>:</h4>
<p>(I am actually doing this :P)</p>



<a name="188116936"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116936" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116936">(Feb 13 2020 at 15:30)</a>:</h4>
<p>Ooookay, moving on.</p>



<a name="188116957"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116957" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116957">(Feb 13 2020 at 15:30)</a>:</h4>
<h1><a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AI-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AI-nominated+label%3AT-compiler">Nominated issues</a> -- there are 17</h1>



<a name="188116973"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188116973" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188116973">(Feb 13 2020 at 15:30)</a>:</h4>
<p>we won't get through them all so maybe people can scan for ones to prioritize, I will do the same</p>



<a name="188117009"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117009" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117009">(Feb 13 2020 at 15:31)</a>:</h4>
<ul>
<li>internal compiler error: "byte index 4 is not a char boundary" <a href="https://github.com/rust-lang/rust/issues/69130" target="_blank" title="https://github.com/rust-lang/rust/issues/69130">#69130</a>  (this is fresh)</li>
</ul>



<a name="188117026"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117026" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117026">(Feb 13 2020 at 15:31)</a>:</h4>
<p>just needs prioritization, I guess</p>



<a name="188117056"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117056" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117056">(Feb 13 2020 at 15:31)</a>:</h4>
<p>P-medium I think</p>



<a name="188117065"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117065" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117065">(Feb 13 2020 at 15:31)</a>:</h4>
<p>agree</p>



<a name="188117164"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117164" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117164">(Feb 13 2020 at 15:32)</a>:</h4>
<ul>
<li><code>miri</code> no longer builds after <a href="https://github.com/rust-lang/rust/issues/69105" target="_blank" title="https://github.com/rust-lang/rust/issues/69105">rust-lang/rust#69105</a> <a href="https://github.com/rust-lang/rust/issues/69117" target="_blank" title="https://github.com/rust-lang/rust/issues/69117">#69117</a></li>
</ul>



<a name="188117176"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117176" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117176">(Feb 13 2020 at 15:32)</a>:</h4>
<p>P-medium I guess</p>



<a name="188117180"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117180" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117180">(Feb 13 2020 at 15:32)</a>:</h4>
<p>has PR I think</p>



<a name="188117246"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117246" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117246">(Feb 13 2020 at 15:33)</a>:</h4>
<p>Static lifetimes checking regression in rustc 1.41.0 A-borrow-checker A-lifetimes C-bug I-nominated I-unsound <span aria-label="boom" class="emoji emoji-1f4a5" role="img" title="boom">:boom:</span> P-high T-compiler regression-from-stable-to-stable<br>
<a href="https://github.com/rust-lang/rust/issues/69114" target="_blank" title="https://github.com/rust-lang/rust/issues/69114">#69114</a> opened 16 hours ago by ilyavenner</p>



<a name="188117269"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117269" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117269">(Feb 13 2020 at 15:33)</a>:</h4>
<p>didn't we just talk about that?</p>



<a name="188117273"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117273" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117273">(Feb 13 2020 at 15:33)</a>:</h4>
<p>Discussed before; Let's assign to Matthew?</p>



<a name="188117300"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117300" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117300">(Feb 13 2020 at 15:33)</a>:</h4>
<p>sure, ok, I'll do so and leave a comment</p>



<a name="188117391"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117391" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117391">(Feb 13 2020 at 15:34)</a>:</h4>
<p>ICE: multiple @ bindings of slice patterns, e.g. <code>[a @ .., b @ ..]</code> A-slice-patterns C-bug I-ICE I-nominated T-compiler<br>
<a href="https://github.com/rust-lang/rust/issues/69103" target="_blank" title="https://github.com/rust-lang/rust/issues/69103">#69103</a> opened 21 hours ago by memoryruins </p>
<p>Has PR, labeling as P-high due to impending stabilization and removing nomination</p>



<a name="188117421"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117421" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117421">(Feb 13 2020 at 15:35)</a>:</h4>
<p>you would think <code>*p = &amp;n</code> where <code>p: *mut &amp;'static T</code> would still error if <code>&amp;n</code> isn't <code>&amp;'static T</code></p>



<a name="188117452"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117452" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117452">(Feb 13 2020 at 15:35)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> let's discuss on issue</p>



<a name="188117465"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117465" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117465">(Feb 13 2020 at 15:35)</a>:</h4>
<p>oh yeah I didn't want to spam it and I was too slow here :P</p>



<a name="188117475"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117475" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117475">(Feb 13 2020 at 15:35)</a>:</h4>
<p>Rustc overflow its stack when using impl Trait and the struct containing the function itself A-impl-trait C-bug I-crash I-nominated T-compiler<br>
<a href="https://github.com/rust-lang/rust/issues/69096" target="_blank" title="https://github.com/rust-lang/rust/issues/69096">#69096</a> opened yesterday by lszxb</p>



<a name="188117498"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117498" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117498">(Feb 13 2020 at 15:35)</a>:</h4>
<p>/me is a bit confused about who is trying to drive :)</p>



<a name="188117520"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117520" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117520">(Feb 13 2020 at 15:35)</a>:</h4>
<p>I guess I did ask for people to make some suggestions...</p>



<a name="188117567"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117567" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117567">(Feb 13 2020 at 15:36)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> two drivers can be more effective :P</p>



<a name="188117575"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117575" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117575">(Feb 13 2020 at 15:36)</a>:</h4>
<p>"interleaved driving"</p>



<a name="188117579"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117579" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117579">(Feb 13 2020 at 15:36)</a>:</h4>
<p>I'm feeling a bit overwhelmed :)</p>



<a name="188117594"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117594" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117594">(Feb 13 2020 at 15:36)</a>:</h4>
<p>I was paging back with stuff and saw I had missed discussion is all</p>



<a name="188117598"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117598" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117598">(Feb 13 2020 at 15:36)</a>:</h4>
<p>anyway, it's fine, we can look at <a href="https://github.com/rust-lang/rust/issues/69096" target="_blank" title="https://github.com/rust-lang/rust/issues/69096">#69096</a></p>



<a name="188117610"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117610" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117610">(Feb 13 2020 at 15:36)</a>:</h4>
<p>Looks like codegen issue</p>



<a name="188117623"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117623" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117623">(Feb 13 2020 at 15:36)</a>:</h4>
<p>(from backtrace)</p>



<a name="188117640"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117640" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117640">(Feb 13 2020 at 15:37)</a>:</h4>
<p>Do we think this should... compile, not... ?</p>



<a name="188117669"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117669" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117669">(Feb 13 2020 at 15:37)</a>:</h4>
<p>is it a regression? probably not</p>



<a name="188117679"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117679" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117679">(Feb 13 2020 at 15:37)</a>:</h4>
<p>checking</p>



<a name="188117693"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117693" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117693">(Feb 13 2020 at 15:37)</a>:</h4>
<p>I feel like we added some code to check for this sort of thing</p>



<a name="188117754"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117754" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117754">(Feb 13 2020 at 15:38)</a>:</h4>
<p>well, hmm,</p>



<a name="188117769"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117769" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117769">(Feb 13 2020 at 15:38)</a>:</h4>
<p>I guess the type is not infinite</p>



<a name="188117815"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117815" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117815">(Feb 13 2020 at 15:38)</a>:</h4>
<p>the problem is probably occurring when generating the symbol name, <span class="user-mention" data-user-id="119009">@eddyb</span>, does the symbol name somehow include the return type or something?</p>



<a name="188117820"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117820" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117820">(Feb 13 2020 at 15:38)</a>:</h4>
<p>Godbolt says this regressed in 1.30.0</p>



<a name="188117831"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117831" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117831">(Feb 13 2020 at 15:38)</a>:</h4>
<p>used to compile</p>



<a name="188117855"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188117855" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188117855">(Feb 13 2020 at 15:39)</a>:</h4>
<p>ah, interesting, let's tag it for the cleanup crew</p>



<a name="188118036"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118036" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118036">(Feb 13 2020 at 15:40)</a>:</h4>
<p>As far as priority, it's a regression, which makes me tend towards P-high, though I'd otherwise have probably said P-medium</p>



<a name="188118065"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118065" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118065">(Feb 13 2020 at 15:41)</a>:</h4>
<p>Yeah; although I could see P-medium being justified as "no one said anything for so many releases" :P</p>



<a name="188118069"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118069" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118069">(Feb 13 2020 at 15:41)</a>:</h4>
<p>but let's do p-high</p>



<a name="188118160"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118160" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118160">(Feb 13 2020 at 15:42)</a>:</h4>
<ul>
<li>Suspicious lifetime inference. <a href="https://github.com/rust-lang/rust/issues/68948" target="_blank" title="https://github.com/rust-lang/rust/issues/68948">#68948</a></li>
</ul>



<a name="188118198"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118198" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118198">(Feb 13 2020 at 15:42)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> how can I do the one-line patch when <a href="https://github.com/rust-lang/rust/issues/69096" target="_blank" title="https://github.com/rust-lang/rust/issues/69096">#69096</a> is far more interesting lol (left a comment already)</p>



<a name="188118210"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118210" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118210">(Feb 13 2020 at 15:42)</a>:</h4>
<p>I think this is "close as expected behavior"</p>



<a name="188118230"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118230" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118230">(Feb 13 2020 at 15:42)</a>:</h4>
<p>I naively thought we weren't wasting time with LLVM type names anymore, I wonder what kind of compile time wins we can get from skipping that</p>



<a name="188118363"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118363" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118363">(Feb 13 2020 at 15:44)</a>:</h4>
<ul>
<li>'index out of bounds: the len is 1 but the index is 1': libcore/slice/mod.rs <a href="https://github.com/rust-lang/rust/issues/68801" target="_blank" title="https://github.com/rust-lang/rust/issues/68801">#68801</a></li>
</ul>



<a name="188118404"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118404" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118404">(Feb 13 2020 at 15:44)</a>:</h4>
<p>I think the problem here is we don't really know the code that reproduces it</p>



<a name="188118414"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118414" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118414">(Feb 13 2020 at 15:44)</a>:</h4>
<p>ubiquitous <code>#[track_caller]</code> can't come soon enough</p>



<a name="188118478"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118478" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118478">(Feb 13 2020 at 15:45)</a>:</h4>
<p>I'm inclined to un-nominate and re-nominate if we have an example.</p>



<a name="188118486"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118486" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118486">(Feb 13 2020 at 15:45)</a>:</h4>
<p>but I can just leave it a week, don't care</p>



<a name="188118489"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118489" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118489">(Feb 13 2020 at 15:45)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> let's call it P-high though?</p>



<a name="188118491"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118491" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118491">(Feb 13 2020 at 15:45)</a>:</h4>
<p>we do now though? just not from the original poster</p>



<a name="188118507"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118507" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118507">(Feb 13 2020 at 15:45)</a>:</h4>
<p>I don't believe we have anything that is narrowed down to something actionable</p>



<a name="188118523"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118523" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118523">(Feb 13 2020 at 15:45)</a>:</h4>
<p>let's ping cleanup?</p>



<a name="188118524"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118524" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118524">(Feb 13 2020 at 15:46)</a>:</h4>
<p>but I'm not entirely sure</p>



<a name="188118569"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118569" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118569">(Feb 13 2020 at 15:46)</a>:</h4>
<p>Yeah, I was debating</p>



<a name="188118570"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118570" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118570">(Feb 13 2020 at 15:46)</a>:</h4>
<p>this is presumably reducible <a href="https://github.com/rust-lang/rust/issues/68801#issuecomment-582920167" target="_blank" title="https://github.com/rust-lang/rust/issues/68801#issuecomment-582920167">https://github.com/rust-lang/rust/issues/68801#issuecomment-582920167</a></p>



<a name="188118576"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118576" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118576">(Feb 13 2020 at 15:46)</a>:</h4>
<p>sure, cleanup crew seems reasonable</p>



<a name="188118605"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118605" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118605">(Feb 13 2020 at 15:46)</a>:</h4>
<p>something about that comment made me suspect it won't reproduce but perhaps I was wrong</p>



<a name="188118613"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118613" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118613">(Feb 13 2020 at 15:46)</a>:</h4>
<p>let's try cleanup crew then, seems good</p>



<a name="188118706"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118706" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118706">(Feb 13 2020 at 15:47)</a>:</h4>
<p>...and priority?</p>



<a name="188118709"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118709" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118709">(Feb 13 2020 at 15:47)</a>:</h4>
<p>re: priority, the ICE is pretty bad</p>



<a name="188118722"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118722" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118722">(Feb 13 2020 at 15:47)</a>:</h4>
<p>it's not a regression afawk?</p>



<a name="188118818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118818">(Feb 13 2020 at 15:48)</a>:</h4>
<p>no idea</p>



<a name="188118844"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118844" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118844">(Feb 13 2020 at 15:48)</a>:</h4>
<p>Yeah, hard to say, especially witout a minimal example</p>



<a name="188118860"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118860" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118860">(Feb 13 2020 at 15:49)</a>:</h4>
<p>I guess P-high is ok, given the uselessness of the ICE</p>



<a name="188118875"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118875" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118875">(Feb 13 2020 at 15:49)</a>:</h4>
<p>we could leave nominated and revisit</p>



<a name="188118993"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188118993" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188118993">(Feb 13 2020 at 15:50)</a>:</h4>
<p>I marked as P-high. Let's do one more then pivot to check-ins</p>



<a name="188119020"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119020" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119020">(Feb 13 2020 at 15:50)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span> btw, why is <a href="https://github.com/rust-lang/rust/pull/68938" target="_blank" title="https://github.com/rust-lang/rust/pull/68938">https://github.com/rust-lang/rust/pull/68938</a> nominated?</p>



<a name="188119044"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119044" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119044">(Feb 13 2020 at 15:50)</a>:</h4>
<ul>
<li>30-60% perf regression in ctfe-stress <a href="https://github.com/rust-lang/rust/issues/68967" target="_blank" title="https://github.com/rust-lang/rust/issues/68967">#68967</a></li>
</ul>



<a name="188119082"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119082" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119082">(Feb 13 2020 at 15:51)</a>:</h4>
<p>caused by  Promote references to constants instead of statics <a href="https://github.com/rust-lang/rust/issues/67000" target="_blank" title="https://github.com/rust-lang/rust/issues/67000">#67000</a> (cc <span class="user-mention" data-user-id="116266">@Santiago Pastorino</span>, <span class="user-mention" data-user-id="124288">@oli</span>)</p>



<a name="188119092"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119092" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119092">(Feb 13 2020 at 15:51)</a>:</h4>
<blockquote>
<p>We knew about this regression in the PR, maybe you remember that discussion. In <a href="https://github.com/rust-lang/rust/issues/67000" target="_blank" title="https://github.com/rust-lang/rust/issues/67000">#67000</a> (comment) I finally came to the conclusion that the reason we regressed perf here is that before that PR we didn't actually evaluate the promoteds, we just created pointers to them. <a href="https://github.com/rust-lang/rust/issues/67000" target="_blank" title="https://github.com/rust-lang/rust/issues/67000">#67000</a> causes all promoteds to get evaluated immediately when their use site is evaluated. Basically any real program would already have done this work as collect would have evaluated the constant. Only if you have loads and loads of dead promoteds can you see the difference.</p>
</blockquote>



<a name="188119099"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119099" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119099">(Feb 13 2020 at 15:51)</a>:</h4>
<p>Sounds like wontfix?</p>



<a name="188119107"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119107" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119107">(Feb 13 2020 at 15:51)</a>:</h4>
<p>going by oliver's note</p>



<a name="188119119"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119119" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119119">(Feb 13 2020 at 15:51)</a>:</h4>
<p>Was going to say the same.</p>



<a name="188119127"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119127" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119127">(Feb 13 2020 at 15:51)</a>:</h4>
<p>OK, closing.</p>



<a name="188119202"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119202" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119202">(Feb 13 2020 at 15:52)</a>:</h4>
<h1>Working group check-ins</h1>



<a name="188119224"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119224" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119224">(Feb 13 2020 at 15:52)</a>:</h4>
<p>Let's start with <a class="stream" data-stream-id="216091" href="/#narrow/stream/216091-t-compiler.2Fwg-polymorphization">#t-compiler/wg-polymorphization</a> (cc <span class="user-mention" data-user-id="116107">@davidtwco</span>)</p>



<a name="188119261"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119261" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119261">(Feb 13 2020 at 15:53)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> wrote me this to post in case they're not around:</p>
<blockquote>
<p>Since this is the first update to the compiler team meeting, this working group is my work for my master's thesis - it aims to implement an analysis to detect when functions could remain polymorphic during code generation. Hopefully this will reduce the amount of LLVM IR generated and improve compilation times.</p>
<p>So far, I've got a basic analysis working and I've got it integrated into the compiler such that a <code>codegen-unit</code> test that I've written pass with the analysis turned on and working. For the last couple months, I've been working on getting the compiler to bootstrap with the analysis turned on, and fighting ICEs to do so.</p>
<p>I've not been able to spend much time on it recently due to other university/work drains on my time, but progress should pick up soon.</p>
</blockquote>



<a name="188119297"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119297" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119297">(Feb 13 2020 at 15:53)</a>:</h4>
<p><span aria-label="wave" class="emoji emoji-1f44b" role="img" title="wave">:wave:</span></p>



<a name="188119303"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119303" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119303">(Feb 13 2020 at 15:53)</a>:</h4>
<p>Specifically the starting point is to detect functions that are generic but have some type parameters that are fully unused (this arises commonly with closures)</p>



<a name="188119325"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119325" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119325">(Feb 13 2020 at 15:53)</a>:</h4>
<p>Is there anything people can do to help, <span class="user-mention" data-user-id="116107">@davidtwco</span> ?</p>



<a name="188119400"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119400" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119400">(Feb 13 2020 at 15:54)</a>:</h4>
<p>I'm not sure there is at the moment, it's just me finding some time to get back to it and work through the remaining ICEs.</p>



<a name="188119417"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119417" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119417">(Feb 13 2020 at 15:54)</a>:</h4>
<p>OK. I forget if you said, is the branch pushed somewhere public?</p>



<a name="188119438"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119438" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119438">(Feb 13 2020 at 15:54)</a>:</h4>
<p>Anyone who wants to can leave some review comments on the approach though, here's the branch: <a href="https://github.com/rust-lang/rust/compare/master...davidtwco:issue-46477-polymorphization" target="_blank" title="https://github.com/rust-lang/rust/compare/master...davidtwco:issue-46477-polymorphization">https://github.com/rust-lang/rust/compare/master...davidtwco:issue-46477-polymorphization</a></p>



<a name="188119470"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119470" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119470">(Feb 13 2020 at 15:55)</a>:</h4>
<p>(it's long overdue a rebase)</p>



<a name="188119521"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119521" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119521">(Feb 13 2020 at 15:55)</a>:</h4>
<p>OK, 5 minutes left, let's do a quick <a class="stream" data-stream-id="144729" href="/#narrow/stream/144729-wg-traits">#wg-traits</a> check-in</p>



<a name="188119541"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119541" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119541">(Feb 13 2020 at 15:55)</a>:</h4>
<h1>wg-traits (cc <span class="user-group-mention" data-user-group-id="692">@WG-traits</span>, I wonder how up to date that alias is)</h1>



<a name="188119555"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119555" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119555">(Feb 13 2020 at 15:55)</a>:</h4>
<p>We are trying to get the "sprint concept" up and going again</p>



<a name="188119601"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119601" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119601">(Feb 13 2020 at 15:56)</a>:</h4>
<p>And we had a recent discussion about which things to focus on</p>



<a name="188119614"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119614" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119614">(Feb 13 2020 at 15:56)</a>:</h4>
<p>I was thinking before this meeting I shuold've maybe prepared a summary :)</p>



<a name="188119624"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119624" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119624">(Feb 13 2020 at 15:56)</a>:</h4>
<p>but there's a mix of work on chalk / work on rustc</p>



<a name="188119663"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119663" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119663">(Feb 13 2020 at 15:56)</a>:</h4>
<p>the idea is to sort of migrate rustc to integrate ideas from chalk and make it able to support GATs etc, while also improving chalk and working towards the rustc-integration we want. The hope is that the two can approach each other and eventually be readily merged. (But without blocking everything on that day.)</p>



<a name="188119685"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119685" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119685">(Feb 13 2020 at 15:57)</a>:</h4>
<p>we've got some new blood coming in, which is great</p>



<a name="188119749"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119749" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119749">(Feb 13 2020 at 15:57)</a>:</h4>
<p>we had some notes on the topics in <a href="https://paper.dropbox.com/doc/wg-traits-2020-sprint-planning--AuNFr3WGUhJ~DsCkt_aNOxmvAg-SSt74TfcovdnKKhZNyzeW" target="_blank" title="https://paper.dropbox.com/doc/wg-traits-2020-sprint-planning--AuNFr3WGUhJ~DsCkt_aNOxmvAg-SSt74TfcovdnKKhZNyzeW">this dropbox paper</a>, still working out some of the details</p>



<a name="188119825"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119825" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119825">(Feb 13 2020 at 15:58)</a>:</h4>
<p>I guess that's about it :)</p>



<a name="188119891"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188119891" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188119891">(Feb 13 2020 at 15:59)</a>:</h4>
<p>Any final comments? We're at 58 minutes</p>



<a name="188120135"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188120135" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188120135">(Feb 13 2020 at 16:01)</a>:</h4>
<p>OK, thanks everyone for attending! <span aria-label="heart" class="emoji emoji-2764" role="img" title="heart">:heart:</span></p>



<a name="188123118"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/triage%20meeting%202020-02-13%20%2354818/near/188123118" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/triage.20meeting.202020-02-13.20.2354818.html#188123118">(Feb 13 2020 at 16:28)</a>:</h4>
<p>Sorry I wasn't able to come for the check in :/ was busy with work</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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